HONG YE SILICONE Concrete Precast Silicone Rubber is a two-component RTV 2 Silicone Rubber, supplied as Condensation Curing Silicone Mold Rubber (tin-cure, 100:3) and Platinum cured mold silicone (Addition Curing Silicone, 1:1/10:1). As versatile liquid silicone and Mold Making Silicone , it cures at room temperature, supports pouring and brushing molding, with 20–40 Shore A hardness and heat resistance up to 220℃. It features low shrinkage, high tear strength and easy demolding; tin-cure serves industrial concrete precasting, platinum-cure acts as Food grade mold silicone. It improves molding precision and service life, cutting production costs for global construction and food processing buyers.
Product Overview
This professional Industrial mold silicone rubber is a two-part room-temperature vulcanized liquid silicone, developed for concrete precast molding. It covers two mature systems: tin-catalyzed condensation curing silicone mold rubber for industrial-grade duplication, and platinum-catalyzed addition curing silicone with food-safe, eco-friendly properties. It supports both pouring and brushing construction methods, with flexible mixing ratios to match different production lines. It effectively resists concrete erosion and high-temperature reactions, ensuring long-term mold stability for both industrial precast parts and food-contact molds.
Technical Specifications
Product Type: RTV 2 Silicone Rubber, mold making silicone, Liquid Mold Silicone ; Form: Two-component liquid silicone (base + curing agent); Mix Ratios: Condensation cure 100:3, addition cure 1:1 / 10:1; Curing Mode: Room-temperature vulcanization; Hardness Range: 20–40 Shore A; Heat Resistance: Up to 220℃; Key Performance: Low shrinkage, non-deformation, high tensile/tear strength, excellent bubble release; Shelf Life: 12 months (≤25℃, sealed dry & cool packages); Packaging: 1kg/jar, 5kg/20kg/25kg/200kg drum, vacuum packing available.
Product Images and Videos
Product Images:
Product Features & Advantages
Platinum cure grade delivers eco-friendly, food-grade safe performance for edible molding applications. Exceptional fluidity and operability simplify pouring/brushing, with outstanding bubble release for smooth mold surfaces. Strong tensile and tear strength extend mold reuse cycles in concrete casting. Non-deformation and low shrinkage guarantee dimensional accuracy of precast parts. Non-stick surface enables easy demolding and cleaning. Aging resistance and 220℃ high-temperature resistance adapt to harsh construction environments. 20–40 Shore A hardness supports small detailed parts and large concrete components alike.
How to Use
Step 1: Clean and dry the master model thoroughly to remove dust and contaminants.
Step 2: Weigh base silicone and curing agent at the set ratio (100:3 for tin-cure, 1:1/10:1 for platinum-cure), then stir uniformly.
Step 3: Adopt pouring for simple structures or brushing for intricate patterns, apply the mixed silicone evenly.
Step 4: Leave at room temperature for full curing; molds can be formed and demolded in 2–3 hours for batch production.
Application Scenarios
Tin-cure condensation curing silicone mold rubber is designed for concrete precasting, architectural components and general industrial product duplication. Platinum-cure food grade Mold Silicone is widely used for jelly trays, chocolate molds, candy molds, cake molds, ice sculpture, baking and food decorations. This dual-series design helps manufacturers use one product line for both construction precast and food molding projects, reducing inventory costs and improving production compatibility.
Certifications and Compliance
This series complies with ISO 9001 quality management and CE industrial safety standards. Platinum-cured food grade mold silicone meets international food contact standards, suitable for global food processing and baking industries. All formulations follow chemical import regulations of major markets, supporting smooth bulk B2B procurement and cross-border logistics.
Customization Options
We provide hardness customization (20–40 Shore A), mixing ratio adjustment, viscosity tuning and package modification. Formula optimization is available for large-scale concrete precast parts and high-detail food molds, adapting to Rapid prototyping silicone tests and mass industrial production. Vacuum and standard packaging can be matched to transportation and storage demands.
Production Process
Made with high-purity Silicone raw materials, the product goes through precise component proportioning, closed vacuum mixing, performance testing (hardness, heat resistance, tear strength) and standardized filling. Each batch is inspected before delivery, with stable production lines ensuring consistent quality and on-time supply for large-volume orders.
FAQ
1. Which system is for concrete precasting?
Tin-cure condensation curing silicone mold rubber is industrial-grade and cost-efficient for concrete precast projects.
2. Why does addition cure silicone sometimes fail to cure?
It is poisoned by N/S/P-containing organics, tin compounds, condensation silicone residues or smoke; strictly avoid contact with these substances.
3. Can this silicone be used for food molds?
Yes, platinum cured mold silicone is food-safe, ideal for chocolate, baking and edible product molds.
4. What is the recommended storage condition?
Store in unopened packages at ≤25℃ in dry, cool places, with a 12-month shelf life.
5. Can both pouring and brushing methods be used?
Yes, its balanced fluidity suits both processes for simple and intricate concrete or food molds.
Shenzhen Hong Ye Jie Technology Co., Ltd
Contact Now
